1 menu "Clock Source drivers"
2 depends on GENERIC_CLOCKEVENTS
28 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
34 bool "BCM2835 timer driver" if COMPILE_TEST
37 Enables the support for the BCM2835 timer driver.
40 bool "BCM mobile timer driver" if COMPILE_TEST
43 Enables the support for the BCM Kona mobile timer driver.
45 config DIGICOLOR_TIMER
46 bool "Digicolor timer driver" if COMPILE_TEST
50 Enables the support for the digicolor timer driver.
53 bool "DW APB timer driver" if COMPILE_TEST
55 Enables the support for the dw_apb timer.
57 config DW_APB_TIMER_OF
63 bool "Faraday Technology timer driver" if COMPILE_TEST
69 Enables support for the Faraday Technology timer block
73 bool "Rockchip timer driver" if COMPILE_TEST
74 depends on ARM || ARM64
78 Enables the support for the rockchip timer driver.
80 config ARMADA_370_XP_TIMER
81 bool "Armada 370 and XP timer driver" if COMPILE_TEST
86 Enables the support for the Armada 370 and XP timer driver.
89 bool "Meson6 timer driver" if COMPILE_TEST
92 Enables the support for the Meson6 timer driver.
95 bool "Orion timer driver" if COMPILE_TEST
100 Enables the support for the Orion timer driver
103 bool "Owl timer driver" if COMPILE_TEST
106 Enables the support for the Actions Semi Owl timer driver.
109 bool "RDA timer driver" if COMPILE_TEST
110 depends on GENERIC_CLOCKEVENTS
114 Enables the support for the RDA Micro timer driver.
117 bool "Sun4i timer driver" if COMPILE_TEST
122 Enables support for the Sun4i timer.
125 bool "Sun5i timer driver" if COMPILE_TEST
127 depends on COMMON_CLK
129 Enables support the Sun5i timer.
132 bool "Tegra timer driver" if COMPILE_TEST
136 Enables support for the Tegra driver.
139 bool "VT8500 timer driver" if COMPILE_TEST
142 Enables support for the VT8500 driver.
145 bool "NPCM7xx timer driver" if COMPILE_TEST
149 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
150 While TIMER0 serves as clockevent and TIMER1 serves as clocksource.
152 config CADENCE_TTC_TIMER
153 bool "Cadence TTC timer driver" if COMPILE_TEST
154 depends on COMMON_CLK
156 Enables support for the cadence ttc driver.
159 bool "ASM9260 timer driver" if COMPILE_TEST
163 Enables support for the ASM9260 timer.
165 config CLKSRC_NOMADIK_MTU
166 bool "Nomakdik clocksource driver" if COMPILE_TEST
170 Support for Multi Timer Unit. MTU provides access
171 to multiple interrupt generating programmable
172 32-bit free running decrementing counters.
174 config CLKSRC_DBX500_PRCMU
175 bool "Clocksource PRCMU Timer" if COMPILE_TEST
178 Use the always on PRCMU Timer as clocksource
180 config CLPS711X_TIMER
181 bool "Cirrus logic timer driver" if COMPILE_TEST
184 Enables support for the Cirrus Logic PS711 timer.
187 bool "Atlas7 timer driver" if COMPILE_TEST
190 Enables support for the Atlas7 timer.
193 bool "Mxs timer driver" if COMPILE_TEST
197 Enables support for the Mxs timer.
200 bool "Prima2 timer driver" if COMPILE_TEST
203 Enables support for the Prima2 timer.
206 bool "U300 timer driver" if COMPILE_TEST
210 Enables support for the U300 timer.
213 bool "NSpire timer driver" if COMPILE_TEST
216 Enables support for the Nspire timer.
218 config KEYSTONE_TIMER
219 bool "Keystone timer driver" if COMPILE_TEST
220 depends on ARM || ARM64
223 Enables support for the Keystone timer.
225 config INTEGRATOR_AP_TIMER
226 bool "Integrator-ap timer driver" if COMPILE_TEST
229 Enables support for the Integrator-ap timer.
232 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
233 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
237 Support to use the timers of EFM32 SoCs as clock source and clock
240 config CLKSRC_LPC32XX
241 bool "Clocksource for LPC32XX" if COMPILE_TEST
247 Support for the LPC32XX clocksource.
249 config CLKSRC_PISTACHIO
250 bool "Clocksource for Pistachio SoC" if COMPILE_TEST
254 Enables the clocksource for the Pistachio SoC.
257 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
258 depends on GENERIC_SCHED_CLOCK
259 select TIMER_OF if OF
261 This option enables support for Texas Instruments 32.768 Hz clocksource
262 available on many OMAP-like platforms.
265 bool "NPS400 clocksource driver" if COMPILE_TEST
266 depends on !PHYS_ADDR_T_64BIT
268 select TIMER_OF if OF
270 NPS400 clocksource support.
271 Got 64 bit counter with update rate up to 1000MHz.
272 This counter is accessed via couple of 32 bit memory mapped registers.
275 bool "Clocksource for STM32 SoCs" if !ARCH_STM32
276 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
281 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
282 depends on GENERIC_SCHED_CLOCK
287 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
288 depends on GENERIC_SCHED_CLOCK
291 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
292 (ARC700 as well as ARC HS38).
293 TIMER0 serves as clockevent while TIMER1 provides clocksource
295 config ARC_TIMERS_64BIT
296 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
297 depends on ARC_TIMERS
300 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
301 RTC is implemented inside the core, while GFRC sits outside the core in
302 ARConnect IP block. Driver automatically picks one of them for clocksource
305 config ARM_ARCH_TIMER
307 select TIMER_OF if OF
308 select TIMER_ACPI if ACPI
310 config ARM_ARCH_TIMER_EVTSTREAM
311 bool "Enable ARM architected timer event stream generation by default"
312 default y if ARM_ARCH_TIMER
313 depends on ARM_ARCH_TIMER
315 This option enables support by default for event stream generation
316 based on the ARM architected timer. It is used for waking up CPUs
317 executing the wfe instruction at a frequency represented as a
318 power-of-2 divisor of the clock rate. The behaviour can also be
319 overridden on the command line using the
320 clocksource.arm_arch_timer.evtstream parameter.
321 The main use of the event stream is wfe-based timeouts of userspace
322 locking implementations. It might also be useful for imposing timeout
323 on wfe to safeguard against any programming errors in case an expected
324 event is not generated.
325 This must be disabled for hardware validation purposes to detect any
326 hardware anomalies of missing events.
328 config ARM_ARCH_TIMER_OOL_WORKAROUND
331 config FSL_ERRATUM_A008585
332 bool "Workaround for Freescale/NXP Erratum A-008585"
334 depends on ARM_ARCH_TIMER && ARM64
335 select ARM_ARCH_TIMER_OOL_WORKAROUND
337 This option enables a workaround for Freescale/NXP Erratum
338 A-008585 ("ARM generic timer may contain an erroneous
339 value"). The workaround will only be active if the
340 fsl,erratum-a008585 property is found in the timer node.
342 config HISILICON_ERRATUM_161010101
343 bool "Workaround for Hisilicon Erratum 161010101"
345 select ARM_ARCH_TIMER_OOL_WORKAROUND
346 depends on ARM_ARCH_TIMER && ARM64
348 This option enables a workaround for Hisilicon Erratum
349 161010101. The workaround will be active if the hisilicon,erratum-161010101
350 property is found in the timer node.
352 config ARM64_ERRATUM_858921
353 bool "Workaround for Cortex-A73 erratum 858921"
355 select ARM_ARCH_TIMER_OOL_WORKAROUND
356 depends on ARM_ARCH_TIMER && ARM64
358 This option enables a workaround applicable to Cortex-A73
359 (all versions), whose counter may return incorrect values.
360 The workaround will be dynamically enabled when an affected
363 config ARM_GLOBAL_TIMER
364 bool "Support for the ARM global timer" if COMPILE_TEST
365 select TIMER_OF if OF
368 This options enables support for the ARM global timer unit
370 config ARM_TIMER_SP804
371 bool "Support for Dual Timer SP804 module"
372 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
374 select TIMER_OF if OF
376 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
378 depends on ARM_GLOBAL_TIMER
381 Use ARM global timer clock source as sched_clock
383 config ARMV7M_SYSTICK
384 bool "Support for the ARMv7M system time" if COMPILE_TEST
385 select TIMER_OF if OF
388 This options enables support for the ARMv7M system timer unit
391 select TIMER_OF if OF
392 def_bool SOC_AT91SAM9 || SOC_SAMA5
395 bool "Atmel ST timer support" if COMPILE_TEST
400 Support for the Atmel ST timer.
402 config CLKSRC_EXYNOS_MCT
403 bool "Exynos multi core timer driver" if COMPILE_TEST
404 depends on ARM || ARM64
406 Support for Multi Core Timer controller on Exynos SoCs.
408 config CLKSRC_SAMSUNG_PWM
409 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
412 This is a new clocksource driver for the PWM timer found in
413 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
414 for all devicetree enabled platforms. This driver will be
415 needed only on systems that do not have the Exynos MCT available.
418 bool "Freescale FlexTimer Module driver" if COMPILE_TEST
422 Support for Freescale FlexTimer Module (FTM) timer.
428 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
430 config OXNAS_RPS_TIMER
431 bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
435 This enables support for the Oxford Semiconductor OXNAS RPS timers.
437 config SYS_SUPPORTS_SH_CMT
441 bool "Mediatek timer driver" if COMPILE_TEST
446 Support for Mediatek timer driver.
449 bool "Spreadtrum timer driver" if EXPERT
451 depends on (ARCH_SPRD || COMPILE_TEST)
455 Enables support for the Spreadtrum timer driver.
457 config SYS_SUPPORTS_SH_MTU2
460 config SYS_SUPPORTS_SH_TMU
463 config SYS_SUPPORTS_EM_STI
466 config CLKSRC_JCORE_PIT
467 bool "J-Core PIT timer driver" if COMPILE_TEST
472 This enables build of clocksource and clockevent driver for
473 the integrated PIT in the J-Core synthesizable, open source SoC.
476 bool "Renesas CMT timer driver" if COMPILE_TEST
478 default SYS_SUPPORTS_SH_CMT
480 This enables build of a clocksource and clockevent driver for
481 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
482 variants on a wide range of Mobile and Automotive SoCs from Renesas.
485 bool "Renesas MTU2 timer driver" if COMPILE_TEST
487 default SYS_SUPPORTS_SH_MTU2
489 This enables build of a clockevent driver for the Multi-Function
490 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
491 This hardware comes with 16 bit-timer registers.
494 bool "Renesas OSTM timer driver" if COMPILE_TEST
497 Enables the support for the Renesas OSTM.
500 bool "Renesas TMU timer driver" if COMPILE_TEST
502 default SYS_SUPPORTS_SH_TMU
504 This enables build of a clocksource and clockevent driver for
505 the 32-bit Timer Unit (TMU) hardware available on a wide range
509 bool "Renesas STI timer driver" if COMPILE_TEST
511 default SYS_SUPPORTS_EM_STI
513 This enables build of a clocksource and clockevent driver for
514 the 48-bit System Timer (STI) hardware available on a SoCs
515 such as EMEV2 from former NEC Electronics.
518 bool "Qualcomm MSM timer" if COMPILE_TEST
522 This enables the clocksource and the per CPU clockevent driver for the
525 config CLKSRC_VERSATILE
526 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
527 depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
529 default y if MFD_VEXPRESS_SYSREG
531 This option enables clock source based on free running
532 counter available in the "System Registers" block of
533 ARM Versatile, RealView and Versatile Express reference
536 config CLKSRC_MIPS_GIC
541 config CLKSRC_TANGO_XTAL
542 bool "Clocksource for Tango SoC" if COMPILE_TEST
547 This enables the clocksource for Tango SoC
550 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
554 This enables OST0 support available on PXA and SA-11x0
558 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
561 This enables the 8 bits timer for the H8300 platform.
564 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
567 This enables the 16 bits timer for the H8300 platform with the
571 bool "Clocksource for the H8300 platform" if COMPILE_TEST
574 This enables the clocksource for the H8300 platform with the
577 config CLKSRC_IMX_GPT
578 bool "Clocksource using i.MX GPT" if COMPILE_TEST
579 depends on (ARM || ARM64) && CLKDEV_LOOKUP
582 config CLKSRC_IMX_TPM
583 bool "Clocksource using i.MX TPM" if COMPILE_TEST
584 depends on ARM && CLKDEV_LOOKUP
587 Enable this option to use IMX Timer/PWM Module (TPM) timer as
591 bool "Low power clocksource found in the LPC" if COMPILE_TEST
592 select TIMER_OF if OF
596 Enable this option to use the Low Power controller timer
599 config ATCPIT100_TIMER
600 bool "ATCPIT100 timer driver"
601 depends on NDS32 || COMPILE_TEST
606 This option enables support for the Andestech ATCPIT100 timers.
609 bool "Timer for the RISC-V platform"
610 depends on GENERIC_SCHED_CLOCK && RISCV
615 This enables the per-hart timer built into all RISC-V systems, which
616 is accessed via both the SBI and the rdcycle instruction. This is
617 required for all RISC-V systems.
620 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
624 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
626 csky,mptimer is not only used in SMP system, it also could be used
627 single core system. It's not a mmio reg and it use mtcr/mfcr instruction.
630 bool "Gx6605s SOC system timer driver" if COMPILE_TEST
635 This option enables support for gx6605s SOC's timer.